Some spatial analysis can occur within the Web Map or the Web Map App. These functions are limited and don’t expect them to mimic Pro.
Spatial analysis is also where service credits (some significant) can be consumed, since service credits are used based on the number of features and type of operation. To get an idea of how many credits can be used for different functions, check the
Service Credit Capability Table
Understand credits—ArcGIS Online Help | Documentation
ArcGIS Online Credits for Premium Services (esri.com)
Premium Content – such as spatial analysis (i.e. Perform Analysis)
Analysis Tools in Web Map
The link below summarizes the spatial analysis capabilities within the Web Map environment.
Perform Analysis Tools in Web Map
These tools are grouped into: